I have created menu items, along with submenu items for my page, using the Sporty Theme. I'm running into a problem where the submenus keep vanishing when I try to hover where they asre supposed to drop down from the main menu.

Hello Ossie
I've just found this topic in support forums and I am having the same issue, but can't find anything to resolve that is similar to your solution above. Must have quite different CSS structure perhaps?